“I am the Lord your God” – this is analogous to a king of flesh and blood who enters a city. They sweep it, sprinkle water on it, decorate it, spread fine curtains and tapestries, and kindle lamps. The Holy One blessed be He said: I am not so, but rather, when I entered My world, I spread tapestries, as it is stated: “Who spreads the heavens like a curtain” (Isaiah 40:22). I kindled lamps, as it is written: “God said: Let there be lights” (Genesis 1:14). I sprinkled water, as it is stated: “Let the waters be gathered” (Genesis 1:9). I decorated everything that I made, as it is stated: “The heavens and the earth and their entire host were completed” (Genesis 2:1).
God Arrives at Sinai Like a King Entering a City
Shemot Rabbah 29:6